It's something in the water.
Sep 07, Many cherry trees have been dropping leaves all summer and are largely bare by now. In most cases, this is simply drought and stress. We had a short drought in June and an extended drought this summer (which still continues).
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When trees are stressed, they will drop extra foliage that they cannot support. Cherry leaf spot is caused by Coccomyces hiemalis. Spots on the leaves, 1 to 3 mm in size, become yellow progressing to brown, and heavily affected leaves turn yellow and fall. Trees can be completely bare by midsummer if the infection is severe.
When warm weather arrives, infected cherry trees decline rapidly and the leaves begin to dull and discolor, turning yellow, red or purple.
The fungus survives in fallen leaves, so leaf removal can help prevent infection. Dec 10, Cherry Tree Leaves Are Turning Yellow & Falling Off Yellowing leaves that drop prematurely are an unsettling sign that something is amiss with your cherry tree. Cherry trees are a Missing: summer. Jul 20, It's lost 90% of it's leaves.
An older cherry-it has still dropped leaves, but proportionately fewer. Another reason for leaf drop is disease, and the same ‘wet spring followed by hot summer’ scenario is also a perfect set-up for leaf diseases. In this case the leaves Estimated Reading Time: 3 mins. Aug 18, b) Cherry tree leaf spot, caused by the fungus Blumeriella jappi, is a disease of cherry foliage and fruit.
The fungus favors wet, humid conditions for infection and temperatures between 60 to 68 degrees F. Small purple to brown leaf spots, leaf yellowing, leaf drop and small holes where leaf spots initially formed identify cherry leaf spot on shrubhauling.barg: summer.